Pet bed



FIG. 1 is an isometric view taken from the top and side of a pet bed showing my new design;

FIG. 2 is a left side elevational view thereof, a right side elevational view being identical;

FIG. 3 is a top view thereof, the bottom view being identical; and,

FIG. 4 is a front elevational view thereof, the rear elevational view being identical. 

The ornamental design for a pet bed, as shown and described. 